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Power Ram 250 C 02-11-2007 10:00 PM
92 Cummins Turbo barking under pressure
 
Hello, I have a 1992 Dodge Cummins Diesel with a 4" straight through exhaust and a K&N air cleaner. I notice when I get it shifted up to 5th gear and have a load on the truck pulling a hill, the turbo makes like a barking sound under a load. Everything else is normal at all times except for when the motor gets to that certain point when I'm pulling a trailer up a hill. Is that normal or is something wrong. The pump was turned up some before I got it. Everything else is stock. Thanks for any help.

keithplacervill 02-11-2007 10:17 PM
boost leak under load?

alborada 02-11-2007 10:28 PM
Do you have a boost gauge? It might help if you know what your turbo is doing.

keithplacervill 02-11-2007 10:30 PM
sorry if you are saying that it does it when you shift that is normal but not good for the turbo can break the shaft

wannadiesel 02-12-2007 04:21 PM
Sounds like the turbo is surging. Does it still have the stock turbine housing on it? The H1C turbos often surge under load with smaller housings.

A compressor kit from HTT or a used HX-35 off a 2nd gen truck will cure the surging. If you don't fix it the turbo shaft will snap eventually.

rlyons 02-12-2007 07:35 PM
Yep, just like he said, mine was doing that when pulling my trailer and I went to the HTT Stage III compressor upgrade and cured it. It is boost pressure backing out of the intake trying to reverse the turbo blades and eventually it will break the shaft.[nonono] Besides the HTT upgrade makes an awesome turbo scream.[laugh]

Power Ram 250 C 02-19-2007 08:35 PM
The turbine housing is stock. I don't have a boost gauge on it but plan on buying one soon. Thanks again for the help.

Power Ram 250 C 02-19-2007 08:39 PM
With the turbo housing are you guys talking about just replacing the exhaust side of the charger or the whole thing?

D/UNIT 02-19-2007 09:05 PM
the HTT upgrade is is a compressor wheel and comp housing upgrade.

Power Ram 250 C 02-20-2007 07:14 AM
One more ? I went to HTT's website and was wondering if I need the Stage III or the Stage II. I don't plan on modifing my truck any more and with the few mods I have done to it now, I was wondering if I need the Stage III.

wannadiesel 02-20-2007 05:06 PM
Originally Posted by Power Ram 250 C (Post 1366856)
With the turbo housing are you guys talking about just replacing the exhaust side of the charger or the whole thing?
Just the exhaust housing.

wannadiesel 02-20-2007 05:07 PM
Originally Posted by Power Ram 250 C (Post 1367387)
One more ? I went to HTT's website and was wondering if I need the Stage III or the Stage II. I don't plan on modifing my truck any more and with the few mods I have done to it now, I was wondering if I need the Stage III.
Get the Stage III. Price is the same, it won't spool noticeably slower and it will flow more air.

Power Ram 250 C 02-24-2007 10:08 AM
Will I have to remove my whole turbo to install the HTT Stage III compressor housing? Thanks.

wannadiesel 02-24-2007 11:38 AM
No, you can leave the turbo on the truck. You just have to drop the downpipe.


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